What is CVE-2025-34127?

CVE-2025-34127 is a vulnerability in Achat Software Chat Server, classified under Stack-based Buffer Overflow. Published 2025-07-16.

Is CVE-2025-34127 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Achat Software Chat Server

CVE-2025-34127

A stack-based buffer overflow exists in Achat v0.150 in its default configuration. By sending a specially crafted message to the UDP port 9256, an attacker can overwrite the structured exception handler (SEH) due to insufficient bounds che…

Vulnerability class: Buffer Overflow

EPSS: 0.733 (98.8th percentile) — read the EPSS interpretation.

Affected products

Achat Software Chat Server — versions 0.150

Weakness classification (CWE)

Public proof-of-concept exploits

rapid7/metasploit-framework

References

raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/w… (exploit)
www.vulncheck.com/advisories/achat-seh-buffer-overflow (third-party-advisory)
www.exploit-db.com/exploits/36056 (exploit)

Frequently asked questions

What is CVE-2025-34127?: CVE-2025-34127 is a vulnerability in Achat Software Chat Server, classified under Stack-based Buffer Overflow. Published 2025-07-16.
Is CVE-2025-34127 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.